How to set datasource of Sub crystal report in c# win form app

Question

I am using this code to load a main report and a subreport inside the main report. The main report is a blank one and just contains subreport.

Here is my code:

Answer 1

Simply do this:

...
DataSet ds = new DataSet();
dscmd.Fill(ds, "DataTable1");
...

ReportDocument cryRpt = new ReportDocument();
cryRpt.Load("C:/MainReport.rpt");
cryRpt.SetDataSource(ds);

crystalReportViewer1.ReportSource = cryRpt;
crystalReportViewer1.Refresh();

Note I'm creating a new DataSet and not a type derived from the DataSet.

In the report/subreport database fields menu, the table must have the same name as the DataTable:

And the Datasource location for reports and subreports must be the same:

This will bind the source tables by name with the .rpt file. Doing in this way you no longer need to set the data for each subreport by code.